Effective Aerobic Oxidation of Alcohols over Chromium Containing Mesoporous Molecular Sieve Catalyst with Supercritical Carbon Dioxide and Polyethylene Glycol Biphasic Reaction System

摘要

Aldehyde and ketone were selectively obtained by aerobic oxidation of alcohols over mesoporous CrMCM-41 catalyst with supercritical carbon dioxide and polyethylene glycol (scCO2/ PEG) as a biphasic reaction system. Oxidation of alcohols to the corresponding oxo-compounds are of primary industrial importance. Traditionally, these transformations are carried out in organic solvents using stoichiometric amounts of toxic chromium(VI) reagents. Even though these reagents show good oxidative performance, problems related to corrosion, handling, recovery, and reuse of the reagent set up limitations of their use at industrial scale.